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EN 1.1181 Steel vs. AISI 445 Stainless Steel

Both EN 1.1181 steel and AISI 445 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.1181 steel and the bottom bar is AISI 445 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19 to 20
25
Fatigue Strength, MPa 190 to 260
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 350 to 390
310
Tensile Strength: Ultimate (UTS), MPa 560 to 620
480
Tensile Strength: Yield (Proof), MPa 280 to 380
230

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
950
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 42
21
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 19
38
Embodied Water, L/kg 47
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
98
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 380
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 22
17
Strength to Weight: Bending, points 19 to 21
18
Thermal Diffusivity, mm2/s 11
5.6
Thermal Shock Resistance, points 19 to 21
16

Alloy Composition

Carbon (C), % 0.32 to 0.39
0 to 0.020
Chromium (Cr), % 0 to 0.4
19 to 21
Copper (Cu), % 0
0.3 to 0.6
Iron (Fe), % 97.4 to 99.18
74.9 to 80.7
Manganese (Mn), % 0.5 to 0.8
0 to 1.0
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.6
Niobium (Nb), % 0
0 to 0.8
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.012